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Rudik [331]
4 years ago
10

A 100-kg object is moving at 20 m/s when a force brings the object to rest 3 points

Physics
2 answers:
densk [106]4 years ago
6 0
0.5 i just took the test
zhenek [66]4 years ago
4 0

Answer:

0.5

Explanation:

By reducing the force, the time taken to stop the object increases, as they are inversely proportional.

Therefore, when a doubling of the time is observed, a halving of the force should be as well.

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Einstein and Lorentz, being avid tennis players, play a fast-paced game on a court where they stand 20.0 m from each other. Bein
igor_vitrenko [27]

Answer:

A) 185.6 J

B) 9.396 x 10^14 J

C) 4x10^7 m/s

D) 20 m

E) 9.09x10^-8 sec

F) 9.09x10^-8 sec

Explanation:

Detailed explanation and calculation is shown in the image below

3 0
3 years ago
What can we say about a polarizing filter with vertically aligned chemical molecules?
klemol [59]

Answer:

A . It will allow vertically polarized light to pass through it.

Explanation:

Polarization is the attribute in which waves oscillate in a particular direction relative to the direction of travel. The direction of polarization determines the type of polarized light produced. Since the chemical molecules are vertically aligned, it will only allow vertically polarized light pass through it.

3 0
4 years ago
What is the radiation pressure 1.5 m away from a 700 W lightbulb? Assume that the surface on which the pressure is exerted faces
baherus [9]

Answer:

3.30 x 10^-7 Pascal

Explanation:

distance r = 1.5 m

power P = 700 W

the radiation pressure is given as

Pr = P/A*c

where

area of the surface A = 4πr^2

calculate for A

speed of light is c = 3×10^8  m/s

plugging above values in equation above gives

Pr = 3.30 x 10^-7 Pascal

3 0
3 years ago
What is the net force?(please don't forget the direction and magnitude)​
elena55 [62]

Answer: In mechanics, the net force is the vector sum of forces acting on a particle or object. The net force is a single force that replaces the effect of the original forces on the particle's motion.

Explanation: Hope dis helps u

8 0
3 years ago
The correct formula for copper (I) bromide is —
Ad libitum [116K]

Answer:

The correct formula is the first one.

Explanation:

Copper has two valences I and II, in this example, it's mentioned that copper's valence is I.

Then we have to look in all the formulas for one formula where copper has that valence, and that valence is in formula 1 and 3. Number 4 is discarted that formula is incorrect, that formula doesn't exist.

Number 2 is also discarted because in this formula Cu has a valence of 2.

Number three is discarted because here Bromide has a valence of 2 and that is incorrect, Bromide's valence is 1.

8 0
3 years ago
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